I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
medullar medullary medlar modular meddler mutular modeller modeler
medullar dollar duller medullary modular mutular nodular patellar radular stellar titular titulary
medulla medullae medal meddle medley module moduli modulo